I agree with the above, and I would like to add one thing. Advertise. It will seem very strange, but it can be very empowering. It takes the pressure off you. You stutter, they know it, it's now a much smaller issue. Kick the presentation in the bum and bask in the glow of a job well done. One note on the advertising, don't apologize for your speech. Explain, yes, but it isn't something you have to apologize or make an excuse for. It is what it is. If you are open and up front about it, it can almost be a strength. Good luck tomorrow.